Sevenoaks Wildlife Reserve is 73ha of woodland, lakes, ponds and reedbeds and is almost entirely man-made. It was the first place in the UK to redevelop an industrial gravel pit expressly to benefit wildlife, an idea that has been much imitated since.

It attracts up to 75,000 visitors a year and the new amenity must promote learning, wellbeing, curiosity and nature, according to the brief.

The “Nature and Wellbeing Centre” aims to be the first of its kind in the country dedicated to connecting people and nature in ways that demonstrate positive benefits for both, said Stevie Rice, head of people engagement for Kent Wildlife Trust.